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How many whole numbers from 1 to 100 contain the digit 3 exactly once?
18
How many 6 digit numbers contain exactly different 4 digits?
There are 22680 numbers, excluding those with leading 0s.
How many 2-digit numbers contain digit 1?
1
How many seven digit numbers contain the number seven at least once?
To find the total number of seven-digit numbers that contain the number seven at least once, we can use the principle of complementary counting. There are a total of 9,999,999 seven-digit numbers in total. To find the number of seven-digit numbers that do not contain the number seven, we can count the number of choices for each digit (excluding seven), which is 9 choices for each digit. Therefore, there are 9^7 seven-digit numbers that do not contain the number seven. Subtracting this from the total number of seven-digit numbers gives us the number of seven-digit numbers that contain the number seven at least once.
How many four-digit numbers are there between 500 and 3000?
If you include the number 3,000, there are exactly 2,001 4-digit numbers between 500 and 3000.
How many whole numbers from 1 to 100 contain the digit 3 exactly once?
18
How many 6 digit numbers contain exactly different 4 digits?
There are 22680 numbers, excluding those with leading 0s.
How many 2-digit numbers contain digit 1?
1
How many 2-digit numbers contain the digit 7 only once?
-5
When The pages of a book are numbered from 1 to 128 How many page numbers contain the digit 6?
The pages of a book are numbered from 1 to 128. How many page numbers contain the digit 6?
How many three digit numbers contain no 7's?
648
How many numbers exactly have 1 digit?
the right answer is 10 cause there is o,1,2,3,4,5,6,7,8,9 so there 10 numbers in total which have 1 digit
How many four-digit numbers are there between 500 and 3000?
If you include the number 3,000, there are exactly 2,001 4-digit numbers between 500 and 3000.
How many two-digit numbers do not contain the number 9?
There are 90 two digit numbers, 10 through 99. There are 18 two digit numbers containing a 9. They are 19, 29, 39, 49, 59, 69, 79, 89, and 90 through 99. Therefore, there are 72 two digit numbers that do not contain a 9.
How many three digit numbers contain at least two sevens?
27: 077,177,277,377,477,577,677,877,977,717,727,737,747,757,767,777,787,797
How many 3-digit numbers have exactly two sevens in them?
Leaving out 077, since it is actually a two digit number, the answer is 35.
How many whole numbers are in a set between 100 and 400 that contain the digit 2?
138 of them.
